"When I feed off of a person and drink their blood I feel stronger and healthier, Caples told The Sun.

"I know scientifically there’s not a lot of nutrition in blood, but maybe there’s some value we haven’t discovered yet," Caples added. "I feel more beautiful than any other time when I’m regularly drinking. I’m also extremely healthy with no major health problems, and I have an abundance of energy all the time."

Steven Gruenstein, a Hematologist from New York's Mount Sinai Hospital, said blood does have some nutritional value.

"Blood does contain chemicals like salt, iron, protein, and people might be driven to drink it because of a deficiency of iron or some other chemical," he said.

Caples claims to drink as much as half of a gallon a month.

Though she is a proud vampire enthusiast, Caples said she keeps her children, Alexi, 11, and Ariel, 24, away from her blood-lust fascination.

Caples' ex-husband Donald, a counselor, said Caples is committed to her children.

"Julia still likes to drink, but she’s also an amazing mother, and her children come first. She’d never let it stop her mothering her kids," he said. "I gave up, so Julia didn’t have to. We agreed that one of us would need to stop and focus on parenting full time."

Despite attempting to keep her blood-drinking obsession away from her kids, Caples' 11-year-old son is aware of her behavior.

"We have all these decorations at home like coffins and dolls," Alexi said. "I’m starting to think she’s a vampire."